use original request sources for endpoint conditions

apps/aether-gateway/src/ai_serving/planner/passthrough/provider/request/body.rs

@@ -12,6 +12,7 @@ pub(crate) fn build_same_format_provider_request_body(
     mapped_model: &str,
     spec: LocalSameFormatProviderSpec,
     body_rules: Option<&Value>,
+    request_headers: Option<&http::HeaderMap>,
     upstream_is_stream: bool,
     kiro_auth: Option<&crate::ai_serving::transport::kiro::KiroRequestAuth>,
     is_claude_code: bool,
@@ -25,6 +26,7 @@ pub(crate) fn build_same_format_provider_request_body(
         source_model: body_json.get("model").and_then(Value::as_str),
         family: same_format_provider_family(spec.family),
         body_rules,
+        request_headers,
         upstream_is_stream,
         kiro_auth_config: kiro_auth.map(|auth| &auth.auth_config),
         is_claude_code,